Kennebunkport is one of Maine's most popular tourist destinations. An information kiosk is located on Dock Square where visitors can get information about what to see and do in Kennebunkport Harbor.

Kennebunkport Harbor has a humid continental climate with large seasonal temperature differences. Summers are warm and can be hot. Winters can be severely cold, and snow is common. Temperatures in Kennebunkport Harbor range from an average high of 20°C (68°F) in July to an average low of -6°C (20°F) in January. Precipitation is lowest from June through August, with about 3 inches, and highest in October (almost 5 inches). Snowfall can reach 19 inches in January.

Kennebunkport Harbor's beaches are the main attraction for visitors. Kennebunkport Harbor has several public (or accessible to the public) beaches. They include Kennebunk Beach, Cooch's Beach, Mother's Beach, and Parson's Beach. Kennebunk, Mother's, and Goose's beaches are long wide beaches with public restrooms and lifeguards from July through Labor Day. A permit is needed to park at the beach and can be obtained from the Chamber of Commerce, some lodgings, and the Town Hall.

The Kennebunk Beach is a 2.4-kilometer (1.5 mile) string of beaches stretching from Gooch's Beach past Lord's Point. All of these beaches are connected by sidewalks, and they offer great views of the seaside and the waterfront inns and homes. Although there are no food concessions, there are bathrooms.

Goose Rocks Beach in Kennebunkport Harbor is three miles long and a favorite of beach walkers and families. With fine silver sand, the dunes and grass shelter nesting piping plovers and lesser terns. About 4.8 kilometers (3 miles) long, a round trip on this Kennebunkport Harbor beach will take about two hours.

The Parson's Way Shore Walk in Kennebunkport Harbor is a popular stroll for those who love the ocean view and the beautiful summer homes along the shore. The 7.7-kilometer (4.8-mile) round trip starts and ends at Dock Square, and it can be a longer loop if you care to walk Wildes District Road.

Rachel Carson National Wildlife Refuge was established to protect the salt marshes and estuaries that migratory birds use. Covering about 80 kilometers (50 miles) of coastline and some 14.6 thousand acres, its 11 divisions stretch from Kittery to Cape Elizabeth, Maine. Habitats in the refuge include tidal salt marsh, forested upland, coastal meadows, barrier beach and dune, and rock coast. Visitor use areas are open for hiking, fishing, and hunting from sunrise to sunset all year, but much of the protected wildlife habitat is closed to the public. The Refuge is about 10 kilometers (6 miles) northwest of Kennebunkport Harbor.